Definition from Wiktionary, the free dictionary
(1785) Colloquial, origin unknown; said to have been thieves' slang for "lightning."
jiffy (plural jiffies)
- (colloquial) A very short, unspecified length of time.
1913, Joseph C. Lincoln, chapter 7, in Mr. Pratt's Patients:
- Old Applegate, in the stern, just set and looked at me, and Lord James, amidship, waved both arms and kept hollering for help. I took a couple of everlasting big strokes and managed to grab hold of the skiff's rail, close to the stern. Then, for a jiffy, I hung on and fought for breath.
- I'll be back in a jiffy.
- (computing) A unit of time defined by the frequency of its basic timer; historically, and by convention, 0.01 seconds, but some operating systems use other values.
- (electronics) The length of an alternating current power cycle (1/60 or 1/50 of a second)
- (physics) The time taken for light to travel one centimetre in a vacuum (sometimes one foot, or sometimes the width of a nucleon)
- (short length of time):
short length of time
(computing) A unit of time defined by the frequency of its basic timer
(electronics) The time between alternating current power cycles
(physics) The time taken for light to travel one centimetre in a vacuum